
For diagram A, find:
One thing that must be true
One thing that could be true or false
One thing that cannot possibly be true

For diagram B, find:
One thing that must be true
One thing that could be true or false
One thing that cannot possibly be true
Refer to Hanger A

Which equation matches Hanger A?
Find the solution to this equation and use Hanger A to explain what the solution means.
Refer to Hanger B

Which equation matches Hanger B?
Find the solution to this equation and use Hanger B to explain what the solution means.
Refer to Hanger C

Which equation matches Hanger C?
Find the solution to this equation and use Hanger C to explain what the solution means.
Refer to Hanger D

Which equation matches Hanger D?
Find the solution to this equation and use Hanger D to explain what the solution means.
Refer to Hanger A:

Write the equation for Hanger A.
Explain how to reason with the hanger to find the weight of a piece with a letter.
Explain how to reason with the equation to find the weight of a piece with a letter.
Refer to Hanger B:

Write the equation for Hanger B.
Explain how to reason with the hanger to find the weight of a piece with a letter.
Explain how to reason with the equation to find the weight of a piece with a letter.
Refer to Hanger C:

Write the equation for Hanger C.
Explain how to reason with the hanger to find the weight of a piece with a letter.
Explain how to reason with the equation to find the weight of a piece with a letter.
Refer to Hanger D:

Write the equation for Hanger D.
Explain how to reason with the hanger to find the weight of a piece with a letter.
Explain how to reason with the equation to find the weight of a piece with a letter.